WEVO-CHEMIE Product program polyurethane casting resins

Wevo 聚氨酯灌封胶选型表

WEVO-Casting
Resin

PD 4

PD 52

PD 4431 FL

PU 304

PU 309

PU 323

PU 390

PU 403

wevo-Hardener

385

385

300

300

300

300

300

300

Mixing ratio
(parts per weight)

100 : 34

100 : 26

100 : 11

100 : 50

100 :30

100 :10

100 :30

100 :14

Viscosity of mixture at 22 ℃ {mPa.s}

Rotating-viscosi-meter

1.200-1.600

1.200-2.000

1.400-1.800

400-600

650-900

700-800

800-900

2.500-3.500

Pot life at 22 ℃ {min.}*

10-30

10-40

10-25

15-70

15-50

5-70

5-50

1-60

Density of the resin at 22℃{g/cm3}

0.91-0.93

1.06-1.09

1.29-1.31

0.98-1.02

1.23-1.26

1.03-1.06

1.28-1.31

1.75-1.79

Density of the hardener at 22℃{g/cm3}

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

Shore-harness
A/D

ISO 868,DIN 53505

70-78/--

75-80/--

50-55/--

--45-50

85-90/--

45-50/--

--/38-42-

--/65-75

Temperature
range of use

-60℃-125℃

-60℃-125℃

-60℃-125℃

-20℃-120℃

-40℃-120℃

-40℃-130℃

-40℃-130℃

-50℃-165℃

Tensile strenght {N/mm2}

ISO 527-2

9

9

6

10

9

1

7

9

Elongation at
break

ISO 527-2

210%

210%

180%

80%

93%

48%

88%

40%

Thermal conductivity{W/mK}

ISO 8894

0,22

0,3

0,33

0,2

0,3

0,2

0,4

0,6

Water absorption

30 Tage 22℃

0.2%

0.5%

0.2%

0.4%

0.4%

4.1%

0.3%

0.7%

Flammability

UL 94

HB

HB

V-0**

HB

HB

HB

V-2**

HB

Dielectric strength{kV/mm}

IEC 602243-1

25

23

22

24

30

19

32

30

Volume resistance{Ω.cm}

IEC 60093 DIN VDE 0303,TI.30

4,2.1014

4,2.1014

1015

1014

9,8.1013

7,1.1010

6,7.1014

1,9.1014

Dielectric constant
at 50 Hz,22℃

IEC 60250 DIN VDE 0303,TI.4

3,1

3,0

3,0

3,4

4,4

7,4

5,5

5,7

Properties

low water adsorption,
flexible

good adhesion

high flexi
bility

low viscosity poly-urethane

univ. appliiic.Pu

flexible high temp. resistant

univ. appliiic.Pu

thermal class F

WEVO-
Casting Resin

PU 403 FL

PU 520

PU 552
FL

PU 570

PU 925/1M

PU 9251 FL

PU 930 M

PU 7210 M

wevo-Hardener

300 RE

300

300

300

600

300 RE

600

300

Mixing ratio
(parts per weight)

100 :14

100 :33

100 :20

100 :20

100 :33

100 :15

100 :33

100 :43

Viscosity of mixture at 22 ℃ {mPa.s}

Rotating-viscosi-meter

2.000-2.500

900-1.000

1.000-1.300

1.500-2.000

850-1.100

2.000-3.000

1.800-2.200

2.400-3.000

Pot life at 22 ℃ {min.}*

2-45

2-60

2-50

10-50

5-40

15-40

10-45

10-20

Density of the resin at 22℃{g/cm3}

1.62-1.65

1.32-1.35

1.56-1.60

1.56-1.59

1.23-1.25

1.53-1.56

1.39-1.42

1.68-1.70

Density of the hardener at 22℃{g/cm3}

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

1.20-1.24

Shore-harness
A/D

ISO 868,DIN 53505

--/60-70

--/70-75

--/65-70

--/65-70

--/70-75

80-85/--

--/72-78

--85-90

Temperature
range of use

-50℃-165℃

-40℃-125℃

-40℃-130℃

-25℃-130℃

-40℃-125℃

-40℃-135℃

-40℃-140℃

-40℃-145℃

Tensile strenght {N/mm2}

ISO 527-2

9

6

6

6

6

7

8

66

Elongation at
break

ISO 527-2

40%

65%

62%

60%

100%

80%

45%

12%

Thermal conductivity
{W/mK}

ISO 8894

0,65

0,35

0,61

0,56

0,3

0,62

0,36

0,55

Water
absorption

30 Tage 22℃

0.6%

0.3%

0.4%

0.4%

2.0%

1.3%

1.0%

3.0%

Flammability

UL 94

V-0**

HB

V-0**

HB

HB

V-0**

HB

HB

Dielectric strength{kV/mm}

IEC 602243-1

30

30

29

28

22

27

31

29

Volume resistance{Ω.cm}

IEC 60093 DIN VDE 0303,TI.30

1,9.1014

1014

5.1013

1014

6,7.1012

1012

3.1014

1014

Dielectric constant
at 50 Hz,22℃

IEC 60250 DIN VDE 0303,TI.4

5,7

4,8

5,6

5,6

7,5

7,8

5,5

3,8

Properties

thermal class F

univ. appliiic.Pu

standard UL-listed resin

univ. appliiic.Pu

good temp.shock perfor-mance

good temp.shock perfor-mance

good adhesion

High heat distortion temp.